9x-7=6x+14
3x-21 = 0
3x = 21
x = 7
11x-9=4x+19
7x-28 = 0
7x = 28
x = 4
10x-2=14(x-3)
раскроем скобки
10x-2 = 14x-42
-4x+40 = 0
4x-40 = 0
4x = 40
x = 10
9x-7=6x+14
3x-21 = 0
3x = 21
x = 7
11x-9=4x+19
7x-28 = 0
7x = 28
x = 4
10x-2=14(x-3)
раскроем скобки
10x-2 = 14x-42
-4x+40 = 0
4x-40 = 0
4x = 40
x = 10